Tracy's race-ready

Dreyer & Reinbold Racing driver Paul Tracy (L) of Canada describes his car's handling to a team engineer during Carb Day, the last day of practice for the Indianapolis 500, at the Indianapolis Motor Speedway in Indianapolis May 27, 2011. The Indianapolis 500 is scheduled for May 29. (REUTERS/Kirk DeBrunner)

"Today's practice was mediocre, we have a little work to do," the veteran Tracy said. "On the speed chart it was okay, we were like 17th quick.

"But the weather will be completely different on race day than what we have now. How much that plays into it is the key."

Tracy said the team must now work on how to make changes in the car that will make it faster when temperatures go from the 20C they were on Friday to the expected 40C on Sunday.

"We really need to focus on how we achieve balance for the 40 degrees and windy, because today was calm and 20 degrees. We will evaluate all of the data and make our best choice for race day."

As for how his 42-year-old body is adjusting to being back in a race car at Indy Tracy never skipped a beat, answering "great."

"I feel great with the WIX team going into Sunday," he said. "Everybody on the team has done a great job all month long and now we are on the homestretch.

"We just need to try and do a good job on race day. I think that it will be a great 100th anniversary."

He said he has to keep the car under him and not get to up on the start, where he expects a lot of chaos.

"You can't get too aggressive right off of the start; you have got to get comfortable with the car," he said. "That is what we are going to try to shoot for; that is a good start where we don't get into trouble. We want to be in a position at the end of the race to make a good run."